Etymology

pyrroline

P3Y4R1R1O1L1I1N1E1

Today it means: Any of three isomeric monounsaturated heterocycles having a five-membered ring and one nitrogen atom C₄H₇N; any derivative of these compounds Full definition →

English pyrrole ← German Pyrro ← Ancient Greek πῠρρός (pŭrrhós)
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The story

  1. Proto-Indo-European*péh₂wr̥
  2. Proto-Hellenic*pāwər
  3. Ancient Greekπῦρ (pûr)
  4. Ancient Greekπῠρρός (pŭrrhós)
  5. GermanPyrro
  6. Englishpyrrole
  7. English todaypyrroline

From pyrrole + -ine.

Etymology from Wiktionary, CC BY-SA 4.0.